/Engine/Source/Runtime/Core/Public/Math/Vector.h
Rotates around Axis (assumesAxis.Size()== 1).
Rotated Vector.
[TVector](API\Runtime\Core\Math\TVector)< T > RotateAngleAxisRad ( const T AngleRad, const [TVector](API\Runtime\Core\Math\TVector)< T > & Axis ) const